查询词典 heavy-handed

In order to find out completely the soil-wheat contaiminated by heavy metals in Tianjin sewage farm, we collect samples on the dry land and examinate contents of heavy metals in soil-wheat system. Firstly, the anthor evaluates that soil irrigated by sewage that has been contaminated slightly, the main polluting factors are Cd and Zn, and then the anthor evaluates soil according to different regions, soil types and irrigating water. Secondly, the anthor analyzes content and enrichment ability of heavy metals in different part of wheat, evaluates wheat is contaiminated by Cd widespreadly, only few samples polluted by Zn.Finally the anthor put up correlative analysis about heavy metal contents in the soil-wheat system, as well as plant enrichment coefficient and some physico-chemical properties of soil, and establishes a prognostic model about heavy metal content among wheat spike, soil, soil types, PH, organic matter and salinity with the quantifying theory.The prognostic accuracy of primarily contaminative factors is the best with compound correlative coefficient examining, the model can be founded.With improvement of living level, people need cleaner food.

为全面了解天津市污灌区农产品生产地土壤和旱地作物小麦的重金属污染状况，我们于2004～2005年对全市污灌区的土壤和小麦进行了采样，在对该区土壤—小麦系统中六种重金属元素(Cd、Cu、Pb、Zn、Cr和Ni)的含量进行检测的基础上，本文首先分析评价了污灌区农田土壤的环境质量总体已达到了轻度污染水平，主要的污染因子是Cd和Zn，同时对污灌区农田土壤分区县、土壤类型和不同灌水类型进行了评价；然后分析了重金属在小麦不同部位的含量与富集能力，评价了污灌区旱地作物小麦普遍遭受了Cd的污染，只有个别样点遭受了Zn的污染；最后对土壤—小麦系统重金属含量间以及植物富集系数与土壤部分理化性质间进行了相关分析，由于土壤类型是定性变量，本论文以数量化理论建立了小麦穗实中重金属含量与土壤中重金属全量、土壤类型、PH值、有机质和全盐量间的预测模型，经复相关系数检验，污灌区主要的污染因子Cd和Zn的预测精度最高，模型可以成立。

By using the generalized central limit theorem, the heavy-tailed distributions (heavy-tailed Rayleigh distribution for amplitude image and heavy-tailed exponential distribution for intensity image) are obtained from the symmetric stable distributions of real and imaginary parts of echoes. Taking the heavy-tailed Rayleigh distribution as an example, the algebraic tails of heavy-tailed distributions are explained as well as the statistics of sharp peak and heavy tail.

本文使用广义中心极限定理，由雷达回波的实部和虚部的对称稳定分布，得到SAR图像的拖尾分布（幅值图像的拖尾Rayleigh分布以及强度图像的拖尾指数分布），并以拖尾Rayleigh分布为例，讨论了拖尾分布的代数拖尾特征以及尖峰厚尾的统计特性。

According to the composting principle and the correlation between the forms of heavy metals and biological efficiency, combining with the controlling means of heavy metals' activity, this test studied the effect of passivation reagents including fly ash, phosphorate rock, zeolite, peat and lime on the forms and the biological efficiency of heavy metals; and the different perception of different passivation reagents were screened and optimized. Basing on the study, the adsorption mechanism of passivation reagents on heavy metals in sewage sludge composting was discussed, and the transformation mechanism of organic forms of heavy metals was also studied through some methods including dialysis and G-75 gel chromatogram separation etc.

本研究根据固体废弃物的堆肥化原理及重金属的不同形态与生物有效性的关系，结合污泥中重金属活性的控制方法，研究了在污泥堆肥中添加粉煤灰、磷矿粉、草炭、沸石和石灰对重金属的形态及重金属的生物有效性的影响，并对不同钝化剂的不同配比进行了筛选和优化；在此研究基础上，探讨了污泥堆肥中钝化剂对重金属的吸附机理，运用透析及G-75凝胶色谱分离等方法研究了污泥堆肥中重金属有机形态的转变机理。

Grasp the derrick of is a kind of to use to come to rise to mourn, let go of and transport the heavy thing and spread to anticipate and make the heavy thing and spread to anticipate even and ambulatory in the short distance internal water of since heavy, the porterage equipments, in common use pack to unload the coal, cement, ash, mineral sand, heavy thing...etc., is a work mineral business enterprise, freight transportation port and pack to unload the wharf production line in the indispensability of a kind of rise heavy, the porterage equipments.

请机械专业英语高手快来！重赏！！！帮助翻译下面的中文摘要！时间一天过期不算抓斗起重机是一种用来起吊、放下和搬运重物、散料并使重物、散料在短距离内水平移动的起重、搬运设备，常用来装卸煤、水泥、灰、矿砂、重物等，是工矿企业、货运港口、装卸码头生产过程中不可缺少的一种起重、搬运设备。

Results show that, following the leaching time extending, the leaching concentrations of heavy metals and lixiviate toxicity of heavy metals increase in the fly ash. When the ratio of liquid and solid add, the leaching concentrations of heavy metals obviously become big, and the Cd's leaching concentration is the biggest, when the ratio of liquid and solid is 90, the Cd's leaching ratio exceed the percent of 70. At the time pH is about 7, the leaching concentrations of heavy metals are the lowest. When the grain size is the bigger or little, the leaching concentrations of heavy metals are lower, however when the grain size is 250-900 μm, the concentrations are higher. After fly ash melt in the high temperature, the lixiviate toxicity of heavy metals greatly reduce, which explains that the effect of melting on heavy metals' stabilization is very good.

结果表明，随着浸出时间的增加，飞灰绝大部分重金属的浸出浓度增高，浸出毒性增强；液固比增加，大部分重金属的浸出率大大提高，其中重金属Cd的浸出率最大，在液固比为90时，飞灰中的Cd的浸出率达到70%以上；pH为中性左右的时候，医疗垃圾飞灰中的大部分重金属的浸出液浓度最低；颗粒尺寸在较大或者较小时，医疗垃圾飞灰中的大部分重金属浸出浓度较小，大部分重金属在颗粒尺寸250～900 μm时，重金属的浸出浓度较高；飞灰高温熔融后，重金属的浸出毒性大大降低，说明熔融对重金属有很好的固化效果。

With Yangtze delta tidal flat as an example, through the analysis on the magnetic characteristics of tidal flat sediment and the study on the space distribution of heavy metal elements, this thesis discussed the impact to Shanghai sea bank brought by heavy intensity development, and the interrelation between sediment power effect and heavy metal pollution space distribution. Utilizing the advantage of artificial intelligence neural network, in conjunction with environmental chemical analysis, from the angle of view of sediment magnetic characteristics, it analyzed the connection mechanism between magnetic mines and heavy metal element within tidal sediments, and built a quantitative magnetical diagnosis model, in attempt to calculating the tidal heavy metal pollution status from the magnetic measurement data of sediments and assess it's impact to the environment.

中文题名长江口潮滩重金属污染的磁诊断模型研究副题名外文题名论文作者许羽导师俞立中教授学科专业自然地理学研究领域\研究方向资源与环境信息系统学位级别博士学位授予单位华东师范大学学位授予日期2001 论文页码总数111页关键词长江口潮滩沉积物环境磁学重金属污染馆藏号BSLW /2001 /X145 /11 本文以长江口南岸潮滩为例，通过对潮滩沉积物磁性特征的分析、重金属元素空间分布的研究，探讨了上海滨岸带高强度开发对潮滩环境质量的影响，以及沉积动力作用与重金属污染空间分布格局的联系。

It is revealed in the study that the heavy metal concentration of Pb,Cu,Zn in the leaves of urban trees (Sabina chinesis,Platycladus orientalis,Euonymus japonicus,Platanus acerifolia, Prunus cerasifera) is significantly related with the relative heavy metal contents in atmospheres of different urban regions of Yantai city, while no such relationship is found in heavy metal Cd, and that the heavy metal amounts of Pb,Cd,Cu,Zn in urban soils had no direct impacts on the heavy metal concentrations in leaves of urban trees.

通过对烟台市区不同大气污染区域绿化植物叶片中重金属Pb，Cd，Cu，Zn富积量和大气与土壤中相应重金属的含量研究分析发现，植物叶片中重金属Pb，Cu和Zn的富积量与大气中Pb，Cu和Zn的相对含量呈显著的正相关，而植物叶片中Cd的富积量与大气中重金属的相对含量相关不显著。

The dormancy in FI population was secund to the heavy dormant parents in"heavy dormancy X heavy dormancy " combinations, while, it was secund to the weak dormant parents in "medium dormancy X heavy dormancy " combinations, in "weak dormancy X heavy dormancy " combinations, some were secund to the heavy dormant parents and some were secund to the weak dormant parents.

强休眠×强休眠组合中F_2休眠性偏向较强休眠亲本；中等休眠×强休眠组合中F_2休眠性偏向较弱休眠亲本；而弱休眠×强休眠F_2的休眠性有的偏向强休眠亲本，有的偏向弱休眠亲本。

Shanghai Lingang New City, deputy director of the CMC, the Shanghai Lingang Economic Development Co., Ltd., chairman of Liu Ping, the current passenger vehicle Lingang Industrial area, the key pieces of the ship, power generation and transmission and distribution equipment, marine engineering equipment such as self-innovation-based equipment manufacturing base of the development framework has been formed basically, in the passenger vehicle manufacturing base, the SAIC independent innovation and self-brand vehicle and engine production bases have been built; The key pieces of the ship manufacturing base, the China Shipbuilding Mitsui projects, China Shipbuilding Heavy Industry Wartsila projects, Volvo times Tatsu project covers the low, middle and high-speed full range of marine engines, marine equipment, various types of enterprises started to gather support; in power generation and power transmission equipment manufacturing base, the production level of one million kilowatts nuclear power primary equipment, heavy-duty gas turbines, is extremely heavy equipment manufacturing capacity heavy electrical joint plant, as well as 1400 tons lifting capacity of 5000 tons berth conditions electrical Heavy Cargo Wharf has been completed and put into production; in the marine engineering equipment manufacturing base, the China Shipbuilding Group has started building a world-class large marine engineering and shipbuilding professionals supporting base; in the civil aviation industry support base, the China Aviation Industrial Group has signed an agreement with the city government , in the Lingang Industrial Area in Shanghai to set up an air base supporting industries.

上海临港新城管委会副主任、上海临港经济发展有限公司董事长刘家平介绍，目前临港产业区内乘用车整车、船舶关键件、发电及输配电设备、海洋工程设备等自主创新型装备制造业基地的发展框架已基本形成，在乘用车整车制造基地方面，上汽集团自主创新和自主品牌整车及发动机基地已建成投产；在船舶关键件制造基地方面，中船三井项目、中船重工瓦锡兰项目、沃尔沃遍达项目覆盖了低、中、高速全系列船用发动机，各类船用设备配套企业开始集聚；在发电及输变电设备制造基地方面，生产百万千瓦等级核电主设备、重型燃气轮机、具有极端重型装备制造能力的电气重装联合厂房，以及具有1400吨吊装能力、5000吨泊位条件的电气重件码头已建成投产；在海洋工程设备制造基地方面，中船集团已开工建设具有世界一流的大型海洋工程与船舶制造专业配套基地；在民用航空产业配套基地方面，中航工业集团已与市政府签署协议，在临港产业区设立上海民用航空产业配套基地。

Based on the evaluation system, the plants whose relative remediation age was between 0~10 years were named as"Hyperaccumulator"and those between 10 ~ 50 years were named as"Accumulator".7 In the experiments six kinds of substrates were mixed with different solid wastes and the absorption and enrichment of plants on heavy metal Cd was studied. The results showed that relative remediation age was an ideal index to evaluate the capability of the phytoremediation on heavy metals, because it took into account more factors which affected the absorption evaluation effects than others, such as the heavy metal content and the biomass of the over-ground part of plants, the heavy metal content and the whole gross in substrates, harvesting frequency of plants and the environment standard of heavy metal. This made relative remediation age be suitable to the sorption capability evaluation of not only different plants on one heavy metal but also one plant on different heavy metals.8 It can be drawn from the relative remediation age of heavy metal Cd that the absorption capability of different plants was not same.

以相对修复年限为评价指标定义相对修复年限为0-10年的植物为&超富集植物&，10-50年的植物为&富集植物&。7在由不同废弃物按一定的比例混合配制的六种土地复垦基质上，系统地研究了几种植物对重金属镉的吸收和富集情况，结果表明，相对修复年限既适用于不同植物对同一种重金属元素的吸收能力的评价，又适用于同一植物对不同重金属元素的吸收能力的评价，是衡量重金属元素植物修复效果的理想指标。8从不同植物对同一基质重金属镉的吸收和富集能力看，不论是经过多年种植的基质，还是第一次种植的基质，小白菜和油菜都是相对理想的植物；而黑麦草、高羊茅和苜蓿的吸收效果并不理想。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。